We look at the division of 25406483 by 2 
The aim is to understand the frequency of 2 in 25406483.

On to step 1:
2 goes into 2 1 times with a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 2 from 2 leaves us with 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 2

Step 2:
5 divided by 2 is 2 with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we take 4 away from 5, we end up with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 2

Step 3:
14 divided by 2 is 7 with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 127.0
Subtracting 14 from 14 leaves us with 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 2

Step 4:
0 divided by 2 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1270.0
Deduct 0 from 0 and we're left with 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 2

On to step 5:
2 goes into 6 3 times with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 12703.0
If we take 6 away from 6, we end up with 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 2

Advancing to step 6:
If we divide 4 by 2, we get 2 and a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 127032.0
Subtracting 4 from 4 leaves us with 0.
Fetch the next digit (8) from the dividend, attach it to 0 and continue: 8 / 2

Step 7:
When dividing 8 by 2, we get 4 with a remainder of 0.
The next digit of our result is 4. 
Result so far: 1270324.0
Subtract 8 from 8 to get 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 2

Going ahead to step 8:
The number 2 fits into 3 1 times, leaving a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 12703241.0
If we take 2 away from 3, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 9:
10 divided by 2 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 12703241.5
If we take 10 away from 10, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
If we divide 0 by 2, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12703241.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
The number 2 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12703241.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 12703241.5, with a leftover of 0.0.